Identify this weed?
 

Hi all,

Being an absolute beginner to gardening I have no chance of identifying this Weed. It's the first time It's popped up in our garden but it's in several spots and wondering what it is and what to do with it. I've had a look round on the interweb but no joy.

Thanks in advance!

OP.

http://farm4.static.flickr.com/3385/...39e76bcf_o.jpg
http://farm4.static.flickr.com/3652/...ae94aa52_o.jpg